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Invasives Watch | Alive in Salem Sound

Seaweeds Found in Salem Sound

Use these algal keys to identify some of the seaweeds found in Salem Sound.

Sea lettuce
Sea lettuce (Ulva lactuca)
Green Seaweeds
Rockweed (Fucus spp.)
Brown Seaweeds
Dulse (Rhodymenia palmata)
Red Seaweeds


Would you like to learn more?
Join one of our volunteer marine invasive species monitoring teams they explore the North Shore's rocky coast!


How many types of seaweed can you identify?
Photo contains native seaweeds
1) Sea Lettuce, 2) Green Cotton Weed, 3) Porphyra,
4) Rockweed, 5) Sausage Weed and 6) Irish Moss